{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01644_006.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Nampa, Idaho | 1921 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd427m:g4274m:g4274nm:g016441921:01644_1921-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Nampa, Idaho | 1921 | sanborn01644_006 p1","metadata":[{"label":"streets","value":"30"},{"label":"intersections","value":"176"}],"created":"2026-09-23T15:04:27Z","modified":"2026-09-23T15:04:27Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd427m:g4274m:g4274nm:g016441921:01644_1921-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd427m:g4274m:g4274nm:g016441921:01644_1921-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 6452.0,0.0 6452.0,7652.0 5063.3,7652.0 3908.4,7652.0 1548.1,7652.0 992.4,7652.0 -0.0,7652.0 -0.0,2968.8 -0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd427m:g4274m:g4274nm:g016441921:01644_1921-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2160.7,888.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-116.5730928,43.5807182]}},{"type":"Feature","properties":{"resourceCoords":[4149.3,3200.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-116.5502607,43.5800913]}}]}}]}